JreVersionDetector.java

/*
 * Copyright 2000-2017 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.intellij.execution.util;

import com.intellij.execution.CommonJavaRunConfigurationParameters;
import com.intellij.execution.configurations.ModuleBasedConfiguration;
import com.intellij.openapi.module.Module;
import com.intellij.openapi.projectRoots.JavaSdkVersion;
import com.intellij.openapi.projectRoots.Sdk;
import com.intellij.openapi.projectRoots.ex.JavaSdkUtil;
import com.intellij.openapi.projectRoots.impl.SdkVersionUtil;
import com.intellij.openapi.roots.ModuleRootManager;
import com.intellij.openapi.roots.ProjectRootManager;
import com.intellij.openapi.util.Comparing;
import com.intellij.openapi.util.text.StringUtil;

public class JreVersionDetector {
  private String myLastAlternativeJrePath ; //awful hack
  private boolean myLastIsJre50;

  public boolean isModuleJre50Configured(final ModuleBasedConfiguration configuration) {
    final Module module = configuration.getConfigurationModule().getModule();
    if (module != null && !module.isDisposed()) {
      return isJre50(ModuleRootManager.getInstance(module).getSdk());
    }
    return isJre50(ProjectRootManager.getInstance(configuration.getProject()).getProjectSdk());
  }

  public boolean isJre50Configured(final CommonJavaRunConfigurationParameters configuration) {
    if (configuration.isAlternativeJrePathEnabled()) {
      String alternativeJrePath = configuration.getAlternativeJrePath();
      if (!StringUtil.isEmptyOrSpaces(alternativeJrePath)) {
        if (Comparing.equal(alternativeJrePath, myLastAlternativeJrePath)) {
          return myLastIsJre50;
        }

        myLastAlternativeJrePath = alternativeJrePath;
        String versionString = SdkVersionUtil.detectJdkVersion(myLastAlternativeJrePath);
        myLastIsJre50 = versionString != null && isJre50(versionString);
        return myLastIsJre50;
      }
    }

    return false;
  }

  private static boolean isJre50(Sdk jdk) {
    return JavaSdkUtil.isJdkAtLeast(jdk, JavaSdkVersion.JDK_1_5);
  }

  private static boolean isJre50(String versionString) {
    if (versionString == null) return false;
    JavaSdkVersion version = JavaSdkVersion.fromVersionString(versionString);
    return version != null && version.isAtLeast(JavaSdkVersion.JDK_1_5);
  }
}